Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Related Medium and Heavy Trucks Questions
My bolts vibrated loose between my fly wheel housing and
my bolts vibrated loose between my fly wheel housing and bell housing exept for bottom two and my flywheel housing broke the bottom of fly wheel housingmy mechanic needs the info to take off the flywh… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
I have a 2010 Volvo VNL d16 and I don't know if it has a DEF
I have a 2010 Volvo VNL d16 and I don't know if it has a DEF filter? If it has a DEF filter, I would like to know the location.… read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
14 satisfied customers
I have a volvo vnl d16 and every time I accelerate the boost
I have a volvo vnl d16 and every time I accelerate the boost gauge only moves a tiny bit and wanted to know what could cause that… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
I'm having trouble with my fan, it runs constantly. I
Hello, I'm having trouble with my fan, it runs constantly. I replaced the fan clutch, didn't fix the problem. Replaced the AC switch, still didn't fix the problem. Read somewhere that it might be the … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
Start the engine, turn on ac it is blowing cold air after
start the engine, turn on ac it is blowing cold air after 5miles no cold air. then turn off ac start driving another 2 miles then again back on ac again .the air blowing cold what is the problem … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,734 satisfied customers
2012 Volvo 670 isx message on dash says check engine fault
2012 Volvo 670 isx message on dash says check engine fault and I have lost all power … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,734 satisfied customers
I have a volvo Vnl 300 volvo engine D12 having a issue with
good day I have a volvo Vnl 300 volvo engine D12 having a issue with the Rad fan staying on unnecessarily even after engine has return to run temp it continues to stay on . Getting check engine ECU fr… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
2012 Volvo VNL 780, code mid130 psid 204 fmi 8. 5-9 times a
Hi,2012 Volvo VNL 780 , code mid130 psid 204 fmi 8. 5-9 times a day the gas pedal cut of, turn off engine , start , 2-3 hours and again the same … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,734 satisfied customers
I have a volvo with a cummins ISX 565. It is a VNL 780. I
I have a few issues, the tractor has been leaving the fan on sleightly, and I replaced the solenoid. It works temporarily, then fails eventually. Secondly my turbo seems to intermittently work, and other times loses boost pressure significantly. I am having major trouble wit this… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
211 satisfied customers
I have a 2012 Volvo VNL 780 w/D13 500. My A/C is freezing up
I have a 2012 Volvo VNL 780 w/D13 500. My A/C is freezing up sometimes and not its blowing cold air for about 10min then starts blowing hot air … read more
Eurotruck72
Eurotruck72
Garage owner
122 satisfied customers
I have a 2007 Volvo vnl 770 with a Volvo D16 engine power
I have a 2007 Volvo vnl 770 with a Volvo D16 engine power steering is really tight at an idle when standing still and loosens up as soon as I rev engine RPMs up I'm thinking maybe pump any other sugge… read more
Eurotruck72
Eurotruck72
Garage owner
122 satisfied customers
My truck is pulling up the following codes. SPN-33 Clutch
My truck is pulling up the following codes. SPN-33 Clutch cylinder position, SPN-37 Transmission Air tank pressure, SPN-4375 Aftertreatment DEF pump drive percentage, SPN-627 Power supply (obsolete) … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
I have a 2010 Volvo VNL 630 with a D16. My engine brake
Hello, I have a 2010 Volvo VNL 630 with a D16. My engine brake failed the other day and almost got me killed going down a hill. My cruise control DOES still work, and I can hear the engine brake kick … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
I have a 2007 Volvo vnl 670, with d12. My fan clutch will
I have a 2007 Volvo vnl 670, with d12. My fan clutch will not disengage. I have changed the fan clutch and the fan clutch solenoid. Fan clutch is staying on. I'm getting 8.8 volts out of the connectio… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
I ran an over head on my 2007 d16 vectro I did it according
I ran an over head on my 2007 d16 vectro I did it according to the service paper I have but it will not crank it sounds like the compretion is off what could the be… read more
Expert
Expert
2001 freightliner columbia, with a detroit diesel engine fan
2001 freightliner columbia, with a detroit diesel engine fan always running, i replaced air solnoid on firewall next to coolant tank, but same thing, always running, i supplies air to the black air ho… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
What would keep the engine fan from shutting off and keep the
What would keep the engine fan from shutting off and keep the engine from getting up to normal operating range… read more
Roy Belding
Roy Belding
7,658 satisfied customers
Cat Man I have a 1LW that isnt turning on the cooling fan when
Cat Man I have a 1LW that isnt turning on the cooling fan when the a/c sends the signal to. I can make the solenoid come on with the diag test can I change something in my config to fix this?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

5,454 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,293 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,563 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,747 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

Mechanic

1,824 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,806 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

462 satisfied customers

24 years of experience diagnosing & repairing

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x